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Im wondering, because several sources state that the empty set is a subset of EVERY set. Yet this instance seem to be proving that statement wrong.    Update: To be more specific...

In a set of integers between the numbers 1 and 10,000, how many of these numbers are divisible by 3, 4, 5 and 11?

One-tenth of the cars in a car park are yellow. Another car arrives and now one-ninth of the cars are yellow. How many cars are now in the car park?

1+4=5 2+5=12 3+6=21 8+11=   I have seen 3 examples of answers people say are correct    Example 1 answer 96   1×4=4+1=5 2×5=10+2=12 3×6=18+3=21 8×11=88+8=96   Example...

There are 30 balls of 10 colors, 3 of each color. One of each 3 balls form the same color is fake. You are allowed to pass several balls, and see whether there are fake balls among them or not. Needs...

Could someone help me on the question below please.   Using Logical simplification, prove that the following are tautologies, contradictions or neither. Verify your answers using a truth...

Consider the following translation scheme:Use symbols to translate A: The American team will win a gold medal. B: The British team will win a gold medal. C: The Canadian team will...

A typical platoon consists of 20 soldiers. If there are 30 soldiers available to create a platoon. How many different platoons are possible?

It is a family day at the creek. One of the most popular activities is the canoe Relay. Each team must have two  adults and three campers. In order to win this race you must canoe all team members...